Fimbulwinter

Proper noun

 * 1)  One of the signs of the onset of the end of this world, the final, three-year-long winter (with no intervening summers); it marks the coming of the Ragnarok, the battle that will end the world.

Translations

 * Danish: fimbulvinter
 * German:
 * Icelandic: fimbulvetur
 * Norwegian:
 * Nynorsk: fimbulvetter
 * Portuguese: Fimbulwinter